package com.example.blogspring.config;

import com.example.blogspring.common.HttpResult;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.SneakyThrows;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * @author : niu niu
 * @version : 1.0.0
 * @date : 2023/5/22 0:53
 * 统一数据返回的保底类
 */
@ControllerAdvice
public class ResponseAdvice implements ResponseBodyAdvice {
    @Autowired
    private ObjectMapper objectMapper;

    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }

    @SneakyThrows
    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        if (body instanceof HttpResult) {
            return body;
        }
        if (body instanceof String) {
            return objectMapper.writeValueAsString(HttpResult.success(body));
        }
        return HttpResult.success(body);
    }
}
